Transformer container



May 27, 1930. A. F. PIEPER TRANSFORMER CONTAINER 7 Filed April 17, .1926

Patented May 27, 1930 r i UNITED STATES PATENT OFFICE ALPHONSE F. PIEPER, OF ROCHESTER, NEW YORK TRANSFORMER CONTAINER Application filed April 17, 1926. Serial No. 102,625.

My invention relates to X-ray transformwhether or not so entirely compressed. The ers and is particularly concerned with the lower end of the electrode 8 also carries the mounting of the high-tension post in the nut 15 whereby the terminal of the secondary cover of the transformer box, its object being coil of the transformer may be connected to to guard against leakage of the oil in which the electrode 8. 55 th coil ar im rs d. The top of the cover 1 is provided with a In the accompanying drawing, which ilrecess 16 around and extending from the lustrates my invention, opening 2, and a cork washer 17, of such di- Figure 1 is a cross sectional view of the ameter as to fit therein, but ofa normal thick box upon the axis of the high-tension post, ness greater than the depth of the recess, is 0 the post itself being shown mainly 1n eleclamped between the cover 1 and the shoultj d der 4. By tightening the nut 6 the shoulder Figure 2 is a view taken on the plane of the 4 may be brought down into contact with the li 2 2 top of the cover 1, the cork washer 17 being Ih h d fib cover f th b i shown entirely compressed within the recess 16 and s at 1, it being understood that the box confitting tightly about the post adjacent shoultains the transformer coils and is filled with der 4. In this way the firm mounting of the il as i ll known in th rt, post 3 in the cover 1 is effected and leaking The cover 1 is provided with an opening of oil is effectively prevented. In view of the through which the post 3 extends, for which nature of the materials employed, i. e. molded 70 the cover provides a support. This post is insulating material for the post and nut and formed of molded insulating material, the hard fiber for the cover, dictated by the best external portion, upwardly from the shoulder practlcefor electrical reasons, it was impos 4 th b i fl t d i th usual and slble, prior to my invention, to secure an adethe internal portion, downwardly from the q ately firm and leak-proof mounting. If Y shoulder 4 being relatively reduced to form I10 compressible material was used, the th h ld fitti snugly i the opening 2, mounting was firm, but not leak-proof. and being provided with screw threads 5 as compressible material was used in the old indicated. A nut G, of insulating material way, i. c. with the mounting entirely subject 9 is threaded onto the internal portion of the thereto, the mounting might be initially leakso post, whereby the cover 1 may be clamped proof, hut it would not be adequately firm, re-

between it and the shoulder e1. sultmg in the working of the post in the cover The post 3 an axial bore through which and consequent leaking. By my invention, the electrode 8, hushed at 9, extends, this the outer margin of the shoulder 4 comes into electrode being provided at the top with a direct contact with the top of the cover, as head 10 and binding nut 11 as is well known clamped thereon with the same effect as to i th a t, firmness as if there were no compressible ma- At its lower end the electrode 8 is screwterial present, while the inner margin thereof,

threaded for the reception of a steel nut 12 cooperating with the floor of the recess, ef-

the upper surface of which is recessed slightfects the compression of the washer 17 to pack ly around and from its opening, as indicated the oint efiectively against leak. Thus, by a at 13. A cork washer 14 of such diameter as snnple device, 1 secure, at the same time, the to lit in the recess 13, but of a normal thickdesirable qualities of firmness of mounting ness greater than the depth of the recess, is and durable packing against leak. l have declamped between the nut 12 and the lower end termined by experiment that cork 1s preferof the bushing 9. By tightening the nut 12 able as the material for the washer 17. to contact with bushing 9 the cork washer 14 I claim: may be compressed to lie entirely within the Inan oil tight mountlng for a high-tension recess 13 and fit tightly about the electrode bushing of an X-ray oil transformer and like 59 8, preventing leakage at this point, however, apparatus, in combination, a bushing, a cover having an opening therethrough for reception of a portion of the bushing, said cover also being provided with a recess in its upper face extending about and from said opening,

5 a compressible sealing gasket fitting into the recess and of normal thickness greater than the depth of the races the bushing being pro- Vided wit n a threaded portion extending through the opening and corresponding in m cross-section thereto, said bushing being also provided with a shoulder at the upper face of the cover and extending outwardly beyond the recess and the gasket therein. and a nut screwed onto the threaded portion of the bushing and bearing against the under face of the cover, the under face of the shoulder seating flat upon the upper face of the cover outwardly beyond the gasket, the cover being clamped between the nut and the shoulder and the gasket being compressed axially and espanded radially by the shoulder into sealing contact with and about said portion of the bushing, the under face of the shoulder being in sealing contact with the upper face of the gasket.

In witness whereof, I hereunto subscribe my name at Stuttgart, Germany, this 1st day oi April, 1926.

ALPHONSE F. PIEPER. 

